waller creek flooding along 45 th street
DESCRIPTION
Waller Creek Flooding along 45 th Street. Design Project C E 365K- Hydraulic Engineering Design Group 11: Scott Cameron, Matthew Strumeyer , Juhn-Yuan Su Dr. D. R. Maidment. Overview. Discussion on Location Hydrodesign Process: Representation Process Evaluation Change Impact - PowerPoint PPT PresentationTRANSCRIPT
WALLER CREEK FLOODING ALONG 45TH STREET
Design ProjectC E 365K- Hydraulic Engineering DesignGroup 11: Scott Cameron, Matthew Strumeyer, Juhn-Yuan SuDr. D. R. Maidment
OVERVIEW• Discussion on Location• Hydrodesign Process:
1. Representation2. Process3. Evaluation4. Change5. Impact6. Decision
• Recommendations
WALLER CREEK• Flooding as a Fundamental Problem (Primary focus of
Project)• 2/3 of Natural Disasters due to Flooding• Examples of Flooding Disasters: Halloween Flood (10/31/2013),
Sandy (2012); a lot of them over the world!• Water Quality another issue (will not be the primary focus
of project)• Buildings simply “getting rid of water as quickly as possible”• NOT the primary emphasis for this project
AREA OF STUDY• FOCUS OF PROJECT: 45th Street
and Avenue F Area• Apartment Complex
Apartment Complex
REPRESENTATIONHow can the Study Area be Described?
• Waller Creek through Avenue F and 45th Street
• Approximately 22,500 feet from downstream of Waller Creek Reach
• Apartment on one side of creek and road on another
PROCESSHow does the Study Area Operate?
• Waller Creek flows downstream along the route indicated
• Flows through the park• Two Bridges:
• 45th Street• Avenue F
Bridges
EVALUATIONIs the Study Area Working Well?
• NO!!!• The Apartment Complex Directly
in the 25-year AND 100-year Floodplain
• Karl McArthur: Flooding Problems between 41st and 47th Street• Particularly Area on the right
EVALUATION
Cross Section to Modify
CHANGEHow might the Study Area be Altered?• SOLUTIONS PROPOSED:
1. Do Nothing2. Get Rid of the Apartment3. Elevate the Apartment4. Elevate BOTH the Apartment and the Road
• USE HEC-RAS for the Simulation Models
SOLUTION 1: DO NOTHING
SOLUTION 1: DO NOTHING Return Period Q total
Min. Ch. El. WS El.
Crit. W.S. E.G. El. EG slope V Flow A T Nf
years cfs ft ft ft ft ft/ft ft/s ft^2 ft 2-year 1240 602.46 609.57 607.76 610.34 0.01087 7.03 186.49 109.35 0.56
5-year 1680 602.46 610.21 608.69 611.080.01131
3 7.78 278.66 188.62 0.5810-year 1990 602.46 610.35 610.29 611.43 0.01391 8.77 305.47 200.22 0.64
25-year 2440 602.46 610.83 610.83 611.860.01303
6 8.96 411.96 240.75 0.63
50-year 2800 602.46 611.13 611.13 612.130.01269
6 9.12 486.5 259.1 0.63100-year 3260 602.46 611.37 611.37 612.45
0.013606 9.67 549.15 272.32 0.66
SOLUTION 2: ELEVATE THE APARTMENT (RIGHT OVERBANK)
• Raise the Apartment by 2.5 Feet• In HEC-RAS, Raise
the Right Overbank (ROB)• Decreases the
Flow Area
SOLUTION 2: RAISE THE APARTMENT
ROB Q totalMin. Ch. El. WS El.
Crit. W.S. E.G. El.
EG slope V Flow A T Nf
2.5 ft up cfs ft ft ft ft ft/ft ft/s ft^2 ft
2-year 1240 602.46 609.57 607.76 610.340.01086
8 7.03 186.52 109.36 0.56
5-year 1680 602.46 610.2 608.69 611.090.01153
9 7.85 263.31 135.57 0.58
10-year 1990 602.46 610.33 610.14 611.460.01452
2 8.93 280.22 141.95 0.66
25-year 2440 602.46 610.76 610.76 611.950.01477
4 9.46 347.47 165.9 0.67
50-year 2800 602.46 611.09 611.09 612.270.01437
9 9.66 404.02 177.41 0.67100-year 3260 602.46 611.38 611.38 612.63
0.015005 10.16 456.41 185.55 0.69
SOLUTION 2 RESULTS
Pros• Lowered Top Width by 45 Feet for
5-year Return Period• Allows greater Flow Velocity
THOUGH Smaller Flow Area
Cons• Requires People to Move Out and
then Move Back In• Need a Machine to Literally
Elevate the Apartment• Need Soil Fill to Add Below the
Apartment
SOLUTION 3: DESTROY THE OBSTRUCTION
• NO Change in Elevation of LOB or ROB
• Water Surface Elevations still the same
SOLUTION 3: DESTROY THE OBSTRUCTION
Destroy Q totalMin. Ch. El. WS El.
Crit. W.S. E.G. El. EG slopeV Flow A T Nf
Apartment cfs ft ft ft ft ft/ft ft/s ft^2 ft
2-year 1240 602.46 609.57 607.76 610.330.01085
7 7.03 188.34 127.75 0.56
5-year 1680 602.46 610.26 608.69 611.030.01037
6 7.49 326.45 261.92 0.56
10-year 1990 602.46 610.43 610.39 611.340.01202
1 8.23 374.12 277.41 0.625-year 2440 602.46 610.83 610.83 611.7 0.01169 8.48 490.42 310.3 0.6
50-year 2800 602.46 611.05 611.03 611.940.01197
4 8.78 561.98 324.64 0.61
100-year 3260 602.46 611.36 611.29 612.210.01163
6 8.93 663.81 341.84 0.61
SOLUTION 3: DESTROY THE OBSTRUCTION
Pros• Flow Velocity has Decreased due
to Larger Flow Area• Less Worries on People along
Waller Creek at Avenue F getting Flooded
Cons• Top Width Increased Significantly• Where are all those people in the
apartment going to go?• MIGHT BE UT STUDENTS!!
SOLUTION 4: RAISE THE LEFT AND RIGHT OVERBANKS
• Raise Both Sides of the Channel by 2.5 feet• Road• Apartment
Complex• Helps solve issue
on Flooding along Apartment and Road
SOLUTION 4: RAISE THE LEFT AND RIGHT OVERBANKS
Elevate LOB and ROB by 2.5 feet Q total
Min. Ch. El. WS El.
Crit. W.S. E.G. El. EG slope V Flow A T Nf
cfs ft ft ft ft ft/ft ft/s ft^2 ft
2-year 1240 602.46 609.57 610.340.01090
9 7.04 179.09 42.77 0.56
5-year 1680 602.46 610.09 611.220.01410
6 8.56 201.65 43.64 0.64
10-year 1990 602.46 610.13 611.680.01936
9 10.07 203.13 43.7 0.76
25-year 2440 602.46 610.06 610.03 612.470.03039
6 12.52 200.21 43.58 0.95
50-year 2800 602.46 610.54 610.54 613.150.02963
2 13.08 221.53 44.39 0.95
100-year 3260 602.46 611.18 611.18 613.980.02805
9 13.62 249.89 45.45 0.94
Pros• Significantly decreased the Top
Width • All to Top Width in the 40s feet
• Increased Flow Velocity though with Much Smaller Flow Area
Cons• Traffic Accidents due to Elevated
Road???• Means: Need to Raise 45th Street
Upstream (cost-inefficient)• Soil Fill Needed• Cost- High; Need to Raise
Apartment and Road
SOLUTION 4: RAISE THE LEFT AND RIGHT OVERBANKS
• Conclude: Solution 2 (Elevate Apartment by 2.5 feet) is the most cost-effective solution• 2.5 Feet- Neutral Selection for Elevation• Water-Surface Level for 100-year Storm Still Below
Apartment
SOLUTION CHOICE
PHOTO OF HEC-RAS MODEL
PROGRESS• Auto-CAD Drawing of Waller Creek and Raised Apartment
Elevation Needed!• Incorporation into ArcGIS with the Raised HEC-RAS Model• FOR MATT AND SCOTT: Please add any of the AutoCAD or
GIS models with the solution if updated.
QUESTIONS?Thank you!